$2, 4-D$ is an effective:

Phototropic and geotropic movements are linked to

In most of the higher plants,the growing $A$ bud inhibits the growth of $B$ bud,a phenomenon called apical dominance. Removal of the shoot tips usually results in growth of $C$ buds.

The primary precursor of $IAA$ is

The Avena curvature test is used for the bioassay of

Storage sprouting of potato tubers can be prevented by treatment with low concentrations of